Optimized for long-range shotgun performance, the Carlson's Choke Tubes White Wing Dove Ported Remington® Extreme Range 12 Gauge Choke features 17-4 stainless steel construction with a ported design that reduces felt recoil and muzzle rise for faster shots on target. Proprietary Triple Shot Technology reduces pellet deformation, delivers denser patterns, and eliminates stray flyers for superior accuracy potential. Plus, this threaded choke tube is compatible with steel, lead, Hevi-Shot, and TSS loads, promising reliable and consistent results with most shotgun loads. Lifetime warranty. Made in USA.